/*
 * ========THE SOLMIX PROJECT=====================================
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.gnu.org/licenses/ 
 * or see the FSF site: http://www.fsf.org. 
 */

package org.solmix.fmk.auth;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.solmix.fmk.servlet.RequestContext;

/**
 * @author solomon
 * @since 0.0.1
 * @version $ID$ 2011-1-3 solmix-ds
 */
public class Authentication
{

   /**
    * @param context
    * @return
    */
   public static String getUsername( RequestContext context )
   {
     Subject subject=null;
    try {
        subject = SecurityUtils.getSubject();
    } catch (Exception e) {}
     
      return (subject!=null&&subject.isAuthenticated())?subject.getPrincipal().toString():null;
   }
   public static String getUsername(){
       return getUsername(null);
   }
   public static boolean isAuthenticated(){
       return SecurityUtils.getSubject()!=null?true:false;
   }

}
